Folding comb



FIG. 1 is a front elevational view of the folding comb showing my new design;

FIG. 2 is a left-side elevational view of the folding comb thereof;

FIG. 3 is right side elevational view of the folding comb thereof;

FIG. 4 is a top plan view of the folding comb thereof; and,

FIG. 5 is a bottom plan view of the folding comb thereof; 

The ornamental design for a folding comb, as shown and described. 